<?php

header("content-type:text/html;charset=utf-8");

class Car{
	public $carMode;
	public $carBand;
	public $weight;
	public $speed;

function Car($m,$b,$w,$s){
	$this->carMode = $m;
	$this->carBand = $b;
	$this->weight  = $w;
	$this->speed   = $s;
}


    function getWeight(){
		return $this->weight;
    } 
    function getSpeed(){
    	return $this->speed;
    }
}

$car1 = new Car("捷达","大众",1.5,160);
echo "<pre>";
print_r($car1);
echo $car1->getWeight();
echo $car1->getSpeed();

class BMWCar extends Car {}

$bmwl = new BMWCar("凯迪拉克","大众",2,200);
echo "<pre>";
print_r($bmwl);
echo $bmwl->getSpeed();

?>

